This article is a brief tutorial to Interstellar Defence Troops gameplay. Interstellar Defence Troops is a space tower defence game. In the game you’ll have to build your own space base and protect it from the hostile invaders. There are four modes in the game: 'Battles', 'Survival', 'Rush', 'Waves'.

The action of the game takes place against the background of picturesque space sceneries in far away corners of our universe.

- Economy -

First of all we need to develop our economy.
1. Select your workers & make the right click on asteroid to start gathering minerals
2. Select your command center, then press `Power plant` button, and select its location

You'll need a good economy to stand out against massive enemy fleet. Keep in mind that amount of minerals in each asteroid is limited. Eventually you will need to expand your base, to nearby asteroids.

- Defence -

Now we are ready to build defence system.
1. Select your command center
2. Build one of four available tower types - `Pulse`, `Long range pulse`, `Laser`, `Rocket`
3. Upgrade your tower to the next level

Each tower has different parameters. For example laser towers has the biggest amount of health, so they can be the first line of your defence. Rocket & long range pulse towers has very big attack range. You can use them to fight against heavy ships.